The California Preliminary Notice: The 20-Day Rule

What California Civil Code requires of a subcontractor or supplier before a mechanics lien or stop payment notice is possible — who must give the preliminary notice, to whom, what it must say, and what happens when it goes out late.

Why this notice exists

In California, the preliminary notice is the price of admission to lien rights. Civil Code section 8200 says that before recording a lien, giving a stop payment notice, or claiming against a payment bond, a claimant shall give preliminary notice — and section 8200(c) says compliance is a necessary prerequisite to the validity of a lien claim or stop payment notice.

Read that as the job's owner reads it: no timely preliminary notice, no lien. Everything else about lien rights — recording, enforcing, the 90-day windows in the general lien guide — sits on top of this one document.

Who gives it, and to whom

Section 8200(a) names three recipients: the owner or reputed owner; the direct contractor the claimant works under, directly or through other subcontractors; and the construction lender, if there is one.

Two exceptions in 8200(e): a laborer is not required to give preliminary notice, and a claimant with a direct contract with the owner gives it only to the construction lender, if any. So a general contractor under contract with the owner is largely outside this rule; a subcontractor, a sub-subcontractor, and a material supplier are squarely inside it.

The 20 days

Section 8204(a): a preliminary notice shall be given not later than 20 days after the claimant has first furnished work on the work of improvement. "First furnished" is the day your work or material first went to the job — not the day you were awarded, not the day you invoiced.

The consequence of missing it is in the same section, and it is not a total loss: a notice given late still works, but the lien rights it supports are limited to the work furnished within the 20 days before the notice was given, and after. Everything furnished more than 20 days before a late notice is outside your lien.

For a design professional, 8204(b) counts the 20 days from when the work of improvement commenced.

What the notice must say

• A general description of the work to be provided (§8202(a)).
• An estimate of the total price of the work provided and to be provided.
• The statutory notice to the owner, in the form and prominence the section requires — the boldface warning that the owner's property may be subject to a lien even if the owner has paid the contractor in full.
• Where a subcontractor has not paid its laborers, the name and address of the laborer and of anyone owed on their behalf (§8202(b)).

Section 8202(c) allows an invoice or certified payroll that carries the required information to serve as the notice, if it is provided in compliance with the section. Do not rely on that without reading the subsection and your own paperwork side by side.

The habits that keep the right

• Record the first-furnishing date the day it happens, on the record for the job, not in somebody's memory.
• Send the notice in the first week, not the third. Twenty days is a ceiling, and a job whose paperwork arrives on day nineteen is one delayed mailing from a partial lien.
• Name the reputed owner and reputed lender from the best information you have; the statute uses "reputed" on purpose, and a notice to the wrong party is what the word protects you from.
• When the estimate changes materially, treat it as a question for counsel rather than an assumption — the section does not say what happens when it does.
• Keep proof of what was sent, to whom, and when. The notice is evidence, and evidence that cannot be produced is not evidence.

This is general information about California law, not legal advice, and the law changes. Deadlines here are as the Civil Code states them; how they apply to a particular job depends on facts a lawyer would need. Confirm with a California construction attorney before relying on any of it.